board/amirix/ap1000/serial.c

   1 /*
   2  * (C) Copyright 2002
   3  * Peter De Schrijver (p2@mind.be), Mind Linux Solutions, NV.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18  * MA 02111-1307 USA
  19  *
  20  */
  21
  22 #include <asm/u-boot.h>
  23 #include <asm/processor.h>
  24 #include <common.h>
  25 #include <command.h>
  26 #include <config.h>
  27
  28 #include <ns16550.h>
  29
  30 #if 0
  31 #include "serial.h"
  32 #endif
  33
  34 const NS16550_t COM_PORTS[] = { (NS16550_t) CFG_NS16550_COM1, (NS16550_t) CFG_NS16550_COM2 };
  35
  36 #undef CFG_DUART_CHAN
  37 #define CFG_DUART_CHAN gComPort
  38 static int gComPort = 0;
  39
  40 int
  41 serial_init (void)
  42 {
  43     DECLARE_GLOBAL_DATA_PTR;
  44
  45     int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
  46
  47     (void)NS16550_init(COM_PORTS[0], clock_divisor);
  48     gComPort = 0;
  49
  50     return 0;
  51
  52 }
  53
  54 void
  55 serial_putc(const char c)
  56 {
  57     if (c == '\n'){
  58         NS16550_putc(COM_PORTS[CFG_DUART_CHAN], '\r');
  59     }
  60
  61     NS16550_putc(COM_PORTS[CFG_DUART_CHAN], c);
  62 }
  63
  64 int
  65 serial_getc(void)
  66 {
  67     return NS16550_getc(COM_PORTS[CFG_DUART_CHAN]);
  68 }
  69
  70 int
  71 serial_tstc(void)
  72 {
  73     return NS16550_tstc(COM_PORTS[CFG_DUART_CHAN]);
  74 }
  75
  76 void
  77 serial_setbrg (void)
  78 {
  79         DECLARE_GLOBAL_DATA_PTR;
  80
  81     int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
  82
  83 #ifdef CFG_INIT_CHAN1
  84     NS16550_reinit(COM_PORTS[0], clock_divisor);
  85 #endif
  86 #ifdef CFG_INIT_CHAN2
  87     NS16550_reinit(COM_PORTS[1], clock_divisor);
  88 #endif
  89 }
  90
  91 void
  92 serial_puts (const char *s)
  93 {
  94         while (*s) {
  95                 serial_putc (*s++);
  96         }
  97 }
  98
  99 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
 100 void
 101 kgdb_serial_init(void)
 102 {
 103 }
 104
 105 void
 106 putDebugChar (int c)
 107 {
 108         serial_putc (c);
 109 }
 110
 111 void
 112 putDebugStr (const char *str)
 113 {
 114         serial_puts (str);
 115 }
 116
 117 int
 118 getDebugChar (void)
 119 {
 120         return serial_getc();
 121 }
 122
 123 void
 124 kgdb_interruptible (int yes)
 125 {
 126         return;
 127 }
 128 #endif  /* CFG_CMD_KGDB */